Bleak · Alburnus alburnus

Bleak in the River Flood Relief

Largest measured bleak: 14 cm

The largest bleak measured in Environment Agency surveys of the River Flood Relief was 14 cm, recorded at Lower Cattlegate on 18 June 1992.

Across 63 measured bleak, the median measured length was 7.5 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Flood Relief.

See bleak records across England →

Most recent observation14 April 2009Rammey Marsh Sluice - David Stoker · 58 fish

Largest measured bleak: 14 cm
Median length: 7.5 cm
Fish measured: 63
Survey locations: 3

Individual EA measurements

Largest measured bleak

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
14 cm	18 Jun 1992	Lower Cattlegate	115885
12 cm	7 Jul 1992	Waltham Common	115816
10.9 cm	7 Jul 1992	Waltham Common	115816
10.5 cm	7 Jul 1992	Waltham Common	115816
10.3 cm	14 Apr 2009	Rammey Marsh Sluice - David Stoker	117158
10 cm	7 Jul 1992	Waltham Common	115816
9.4 cm	14 Apr 2009	Rammey Marsh Sluice - David Stoker	117158
9 cm	14 Apr 2009	Rammey Marsh Sluice - David Stoker	117158
8.6 cm	14 Apr 2009	Rammey Marsh Sluice - David Stoker	117158
8.5 cm	14 Apr 2009	Rammey Marsh Sluice - David Stoker	117158

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where bleak were found

Each point marks a survey location with at least one bleak record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyed	First recorded	Last recorded	Visits finding bleak
Rammey Marsh Sluice - David Stoker	14 Apr 2009	14 Apr 2009	1
Waltham Common	7 Jul 1992	7 Jul 1992	1
Lower Cattlegate	18 Jun 1992	18 Jun 1992	1

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1992–2009

Survey records by year

Each bar shows how many survey visits recorded bleak that year.

292

093

094

095

096

097

098

099

000

001

002

003

004

005

006

007

008

109

Fish measured by surveyors

Measured length distribution

See how the 63 measured fish were spread across different length ranges.

Smallest: 6.3 cm
Lower quarter: 7 cm
Median: 7.5 cm
Upper quarter: 8.1 cm
Largest: 14 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Flood Relief

Compare other species with enough survey and measurement data for a detailed page.

Roach European eel Pike Tench Perch Barbel

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →